Display screen or portion thereof with graphical user interface



FIG. 1 is a front view of a display screen or portion thereof withgraphical user interface, showing our new design; and,

FIG. 2 is a front view thereof, in which a display device in brokenlines is provided to illustrate an example environment.

The broken lines shown in the drawings represent portions of the displayscreen or portion thereof with graphical user interface and environmentthat form no part of the claimed design.

CLAIM The ornamental design for a display screen or portion thereof withgraphical user interface, as shown and described.